Blitzball isn't just a major part of Tidus' character at the start of the game, it's also a fun mini-game
Costing five ink to use, this action lets you and your opponent reveal a character in the hand and play it for free
I think for a deck that embraces flooding the field with characters and bouncing would-be-banished characters back to your hand, the cards that let you heal (which are almost never useful in any trading card game) are wasted space here
Not only by destroying some deck ideas from the very beginning, but also by limiting your card space, if you need to accomodate for one or the other Neo Exdeath counter
However, precons are rarely great on their own, so one can either upgrade them or use them as a starting point for more complex Commander decks
None of the common creatures (even the best ones like Summon: Fat Chocobo) are likely worth stretching your mana for